package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetMealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author 陈书憬
 * @version 1.0
 */
@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetMealMapper setmealMapper;

    //分页查询
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        //分页查询插件
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);
        //获取数据总数
        long total = page.getTotal();
        //页数据集合
        List<Category> result = page.getResult();

        return new PageResult(total, result);
    }

    //启用、禁用分类
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                //  .updateTime(LocalDateTime.now())
                //  .updateUser(BaseContext.getCurrentId())
                .build();
        categoryMapper.update(category);
    }

    //根据id删除分类
    @Override
    public void delete(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.delete(id);
    }

    //修改分类
    @Override
    public void update(Category category) {
//        category.setUpdateTime(LocalDateTime.now());//设置更新当前时间
//        category.setUpdateUser(BaseContext.getCurrentId());//设置修改操作人
        categoryMapper.update(category);
    }

    //新增分类
    @Override
    public void insert(CategoryDTO categoryDTO) {
        Category category = new Category();

        //对象属性拷贝
        BeanUtils.copyProperties(categoryDTO, category);

        //设置分类创建，默认为禁用
        category.setStatus(StatusConstant.DISABLE);

//        //设置当前创建时间，修改时间
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//
//        //设置当前记录创建人id和修改人id
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.insert(category);
    }

    /**
     * 根据类型查询分类
     *
     * @param type
     * @return
     */
    public List<Category> list(Integer type) {
        return categoryMapper.list(type);
    }
}
